K-Patents DD-01 - Manual (Page 32)

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8.3. REMOTE DIVERT CONTROL UNIT IN THE CONTROL ROOM
Figure 8.30 Operator’s panel and functions of the remote divert control in the control room.
The remote divert control unit contains all information for the deviation decision. The operation is clearly
indicated with LED lights as follows:
1. A row of four alarms (indicating Black liq-
uor SOLIDS WARNING (at 60%), Black liq-
uor SOLIDS ALARM (below 58%), Refrac-
tometer reading more than 2% absolute differ-
ence, and Refractometer malfunction).
2. Each refractometer A and B has an
OPERATING green light, so the operator
knows when he can rely on the refractometer
measurement.
A refractometer will influence the divert deci-
sion only when the green OPERATING light is
on. A malfunctioning refractometer is auto-
matically taken out of operation.
3. One green indicator light SAFE% SOLIDS,
based on the two refractometers and the divert
decision rules.
4. A red OVERRIDE warning light.
5. One red DIVERT light that will be switched
on when the SAFE% SOLIDS goes off, pro-
viding OVERRIDE is off. The DIVERT light
indicates divert status of the divert relay.
6. Two indicator lights for the divert valve
status. TO BY-PASS/TO BURNER from mi-
croswitches on the valve. For intermediate
valve positions both lights are off.
7. A lockable Override/Automatic switch.
8. One RESET push-button for the DIVERT
action. The DIVERT action always has to be
manually reset. If the override swithc is in
automatic position and SAFE% SOLIDS is off,
the DIVERT cannot be reset.
9. EMERGENCY DIVERT push-button.
10. A light test button switches all 11 lights on.
11. An alarm reset button resets the alarm
lights.
12. Communication to MASTER DIVERT ok,
indication light blinking.
13. Power supply ok, indication light on.
Note when remote divert in use, master di-
vert unit in the field is for indication only!
INSTRUCTION MANUAL FOR DD-01 DOCUMENT/REVISION: IMD 1/5
Effective: June 20, 2005